NextDiff review
A focused free option for side-by-side text and folder comparison on Windows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
NextDiff is a freeware Windows application for comparing two files, text documents, source-code files, or folders. It is aimed at users who need a practical way to inspect differences, identify files present on only one side, and apply selected changes. The published plan describes support for Windows 10 and 11, with free use for both personal and commercial purposes. Its focus is direct comparison and controlled editing rather than a broader development workflow.
For text work, NextDiff combines side-by-side viewing with line-by-line and in-line difference highlighting. Users can navigate differences, edit text within the comparison view, and copy differences from either side. Filters for case, whitespace, and blank lines help narrow attention to meaningful changes, while support for common text encodings broadens its usefulness across different files. Recent merge or edit actions can also be undone. Folder and subfolder comparison extends the same approach beyond individual documents, including detection of files that exist on only one side.
The product can optionally use Apache Tika to extract text from formats such as PDF, DOCX, XLSX, and PPTX, adding document-oriented comparison to its text and source-file capabilities. Its narrow Windows focus and two-file comparison model make it a sensible pick for individuals and teams that want a free comparison utility without subscriptions or trials. Choose another tool if your workflow depends on three-way merge conflict handling, version-control integration, or a platform other than Windows.
NextDiff pros and cons
- Where it wins
- Compares files, text, folders, and subfolders side by side
- Supports editing, selective copying, undo, and difference filters
- Free for personal and commercial use on Windows 10 and 11
- Where it doesn't
- Designed for Windows rather than cross-platform use
- Two-way comparison does not cover three-way merging
- Version-control integration is not part of the listed feature set
NextDiff fact sheet, pricing and score →
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